headband: ERSCH - Bat Girl Gacha Headband 

blackbat´s on head: ERSCH - Bat Girl Gacha Secret
wing/sleevs: ERSCH - Bat Girl Gacha Sleeves RARE
dress: [Cynful] Doppelganger Dress - Maitreya Lara @C88
shoes: N-core - SURVIVOR @ Uber